The invention relates to a special tensioning jack for a high-speed railway rail board. The special tensioning jack comprises a jack which is composed of a cylinder and a piston rod mounted in the cylinder. The special tensioning jack is characterized by further comprising a displacement sensor, a load sensor, a piston rod connecting plate, a load sensor connecting flange and connecting guide rods, wherein the front end of the piston rod is connected with the piston rod connecting plate; guide holes are formed in the piston rod connecting plate; the load sensor connecting flange is fixedly connected with the connecting guide rods; the connecting guide rods penetrate through the guide holes; one end of the displacement sensor is fixedly connected on the cylinder; the other end of the displacement sensor is fixedly connected with the piston rod connecting plate; and the load sensor is mounted between the piston rod and the load sensor connecting flange, and is fixedly connected with the load sensor connecting flange. When the jack works, the displacement sensor conveniently obtains a tensioned displacement value of a workpiece, and the load sensor also conveniently obtains the size of tensioning force.


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    Title :

    Special tensioning jack for high-speed railway rail board


    Contributors:
    DING LI (author) / GU YAJUN (author) / ZHOU TAO (author) / SHEN YU (author)

    Publication date :

    2015-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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